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View Full Version : 1970-1 EEC Gas Cap-NOS


Mr70
11-24-2008, 06:51 PM
A nice original rarely seen cap from the day for ALL 1970-1 Vehicles equipped with RPO NA-9 Evaporative Emission Control..aka Charcoal cannister..aka Calif. emissions.
Chevrolet recognizes this cap as #3984552 as ALL w/EEC during 1970-1.It was soon superseded by cap #3997480 in the years afterwards.
A hard to find authentic special gas cap to find,as Taiwan reproduction companies don't do it justice and copied the last design released,not the first.
Box is weathered but the cap and seal are fine.
$100
Money back gaurantee if not as stated or satisfied.
Free shipping to sYc star members.
Pictures/part #'s/inquiries are best via email please.. [email protected] NO PM'S!
Check out my other classified ads here,as I am slooooowly selling over 30 years of some scarce parts & memorabilia.


http://i159.photobucket.com/albums/t142/peterspix_2007/hoodpinsgascaps0008.jpg

http://i159.photobucket.com/albums/t142/peterspix_2007/hoodpinsgascaps0009.jpg

http://i159.photobucket.com/albums/t142/peterspix_2007/hoodpinsgascaps0010.jpg

COPO 70 RS/Z28
11-24-2008, 10:24 PM
Sold!!!!!!!!!!!

70 Forest Green Zee
11-25-2008, 04:18 AM
Rick....I have the same gas cap on my 70 Z but the "S" in the middle is rotated 90 degrees from the one you have pictured. Is there any explaination for this??

http://i97.photobucket.com/albums/l232/rmitch120/tn_P1000432.jpg

SuperNovaSS
11-25-2008, 04:30 AM
I think it just depends the way the rivit went it.



Jason

70 Forest Green Zee
11-25-2008, 04:34 AM
[ QUOTE ]
I think it just depends the way the rivit went it.



Jason

[/ QUOTE ]


If you look closely, the rivit is the same as the one Rick has pictured...only the"S" is rotated .

CamarosRus
11-25-2008, 05:03 AM
While on the NA-9 subject.......I'd like to read some comments on the rarity of finding the heat shield and 4 nipple cannister........and values $$$$$$$$

A member at nasty Z-28 is in the process of repopping the heat shield.....

This was my 1st time hearing about special gas cap.......which quite frankly I think Carlisle judging has missed/overlooked

COPO 70 RS/Z28
11-25-2008, 06:33 AM
Chuck do you have an extra 4 line canister. I believe its the same part # as the ls-6

http://www.yenko.net/ubbthreads/images/graemlins/beers.gif http://www.yenko.net/ubbthreads/images/graemlins/beers.gif

Saw one of these caps on ebay last year, was asleep at the wheel and missed it. It went for 70 bucks as I remember.

CamarosRus
11-25-2008, 08:38 AM
which LS-6 application uses the 4 nipple charcoal cannister.

Did Calif sold LS-6's have a NA-9 similar to Z-28 NA-9 ???

I'm just accumulating parts.......

Mr70
11-25-2008, 09:02 PM
All 1970 solid lifter-(Holley carb.equipped),engined vehicles that were built with w/RPO NA-9-(Calif. emissions) used the same 4 nipple charcoal cannister..part#7028024.

Stant caps produced on odd days were stamped w/the "S" left to right,on even days,up & down..Some purists have been caught spinning the rivit to fit their cars actual assembly day. I couldn't resist. http://www.yenko.net/ubbthreads/images/graemlins/tongue.gif
Gas cap is sold...Thank You Carl.

COPO 70 RS/Z28
11-26-2008, 05:30 AM
70 assembly manual shows three separate canisters

It shows the z and the ls-6 as the same part #

I need one http://www.yenko.net/ubbthreads/images/graemlins/no.gif http://www.yenko.net/ubbthreads/images/graemlins/no.gif

http://www.yenko.net/ubbthreads/images/graemlins/beers.gif

Mr70
11-26-2008, 06:09 AM
I've found a few in junkyards,but nothing recently.
There were 3 different charcoal cannister designs during 1970.
*One for the single & two bbl. carbs.-3 nipple.
*One for the four bbl. Quadra-jet carb.-3 nipple.
*One for the four bbl.Holley carb.-4 nipple.
The Holleys needed the 4 nipple charcoal cannister because their primary fuel bowl is vented back into the cannister through a seperate line.
The 70 Z/28 used a Holley,as did the L-78,LS-6 engines.

COPO 70 RS/Z28
12-10-2008, 07:33 AM
Rick,

Today was a good day!!!!!!!!!!!!!

I got my gas cap Thanks it's great

and Blago did the perp walk!!!!!!

Doesn't get much better than that http://www.yenko.net/ubbthreads/images/graemlins/biggthumpup.gif

Mr70
12-10-2008, 07:39 AM
That's funny.. http://www.yenko.net/ubbthreads/images/graemlins/grin.gif Thank You too Carl.
Rick